CT320: Network and System Administration

Fall 2018

WWW

See this page as a slide show

CT320 WWW

First web server, CERN

URL

All web communication is done with URLs (ok, URIs, but we’re not going there). Each URL starts with a scheme, followed by a colon, followed by God only knows what:

There are scores of such schemes registered: https://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml

Web Browsing

Browsing Request

    GET /~ct320/Fall18/Lecture/WWW HTTP/1.1
    Accept-Encoding: gzip, deflate, br 
    Accept-Language: en-US,en;q=0.9 
    User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/62.0.3202.75 Chrome/62.0.3202.75 Safari/537.36 
    Host: www.cs.colostate.edu

Browsing Response

    HTTP/1.1 200 OK
    Date: Mon, 25 Jun 2018 16:32:52 GMT
    Server: Apache/2.4.6 (Red Hat Enterprise Linux)
    Content-Type: text/html; charset=UTF-8

    <!doctype html>
    <meta charset='utf-8'>
    <title>CT320 | Lecture / WWW</title>
    … 

Browsing Security Considerations

Private Browsing

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Private Browsing

User: Guest

Check: HTML CSS
Edit History Source

Modified: 2018-06-21T18:28

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